Reactions of (2,3-dimethylenetetramethylene)bis(dipropylborane) with carbonyl compounds
作者:M. E. Gursky、S. B. Golovin、A. V. Ignatenko、Yu. N. Bubnov
DOI:10.1007/bf00699996
日期:1993.1
Abstract(2,3-Dimethylenetetramethylene)bis(dipropylborane) (1) prepared by borylation of 2,3-dimethylbutadienediyl dipotassium reacts with ketones to form symmetrical diols in a yield of 46–73%. [4+2]-Cycloaddition reactions of diborane1 with 1,2-dicarbonyl compounds proceed highly stereospecifically, affording onlycis-isomers of 4,5-dimethylenecyclohexane1, 2-diols.